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1. A Carnot heat engine takes 2000J of heat from the high temperature reservoir at 227 degrees Celsius, does some work and discards heat into the low temperature reservoir at 77 degrees Celsius. What is the Carnot efficiency? How much work does the engine do and how much heat is discarded?
A uniform electric field of magnitude 256 V/m is directed in the negative y direction. A +12.9 uC charge moves from the origin to the point (x, y) = (20.0cm, 45.6 cm). What was the change in the potential energy of this charge? Through what potent..
A nearsighted patient's far point is 0.723 m from her eyes. What is the distance between her eyes and the glasses
A car in a roller coaster moves along a track that consists of a sequence of ups and downs, Derive a general expression for the speed v of the car
What is the horizontal component of superhero's displacement.
A boat is cruising in a straight line at a constant speed of 2.5 m/s when it is shifted to neutral. what was the boats acceleration while coasting
The impact of the racket gives the ball a constant acceleration of 46 cm. Illustrate what is the magnitude of the net force acting on the ball?
A particular organ pipe can resonate at 213 Hz, 355 Hz, and 497 Hz, but not at any other frequencies in between. What is the fundamental frequency of pipe.
A 3.70g bullet moving at 250m/s enters and stops in an initially stationary 3.50kg wooden block on a horizontal frictionless surface, How much work was done in stopping the bullet
What is value of Earths magnetic field
you throw a stone upward with an intial speed of 5.8m/s from a third-story office window. Find the speed of the stone just before it hits the ground
Two 0.20-H inductors and one 0.44-H inductor are connected in series across the terminals of a 60.0-Hz ac generator. What is the total inductive reactance of this circuit
A cart is moving horizontally along a straight line with constant speed of 30 m/s. At what speed(relative to the cart), and angle must the projectile be fired
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